What counts as an original in this context? Would another unauthorized art piece of a different type in the same protected land be an original? Would a metal monolith in a different park count as an original for that park? Would a unauthorized art piece of a different type in a different park be an original? What if one of these originals was 100' high?
If you allow the original but remove a 2nd and it is goverment land, are you opening yourself up to legal issues regarding the 1st amendment.
If you allow the original but remove a 2nd and it is goverment land, are you opening yourself up to legal issues regarding the 1st amendment.